US Bridges

Ramp I over Mamaroneck River

Good

Westchester County, New York · I287 Exit 7 · Structure no. 000000001078700

Built
2009
16 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete
Length
23 ft
1 main span
Daily traffic
2,382
2020 count
Owner
State
State Highway Agency

About this bridge

Ramp I over Mamaroneck River is a concrete culvert carrying Ramp I over Mamaroneck River in Westchester County, New York. It was built in 2009, so it is 16 years old, younger than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,382 vehicles a day, projected to reach 4,033 by 2041. The structure is 23 ft (7 m) long.

Location

Open in Google Maps
CarriesRamp I
CrossesMamaroneck River
LocationI287 Exit 7
RouteInterstate 0
CountyWestchester County
StateNew York
Coordinates41.03309, -73.75272
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating103 US tons
Inventory rating61.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length23 ft (7 m)
Longest span22 ft (6.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,382 (2020)
Projected traffic4,033 by 2041
Trucks0%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$286,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Ramp I over Mamaroneck River built?

It was built in 2009, making it 16 years old in 2025.

What condition is Ramp I over Mamaroneck River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does Ramp I over Mamaroneck River carry?

About 2,382 vehicles per day (2020 count).

How long is Ramp I over Mamaroneck River?

The structure is 23 ft (7 m) long with a longest span of 22 ft (6.7 m).

Who owns Ramp I over Mamaroneck River?

It is owned by the State Highway Agency.